class Song(object):

    def __init__(self,lyrics):
        self.lyrics = lyrics

    def sing_me_a_song(self):
        for line in self.lyrics:
            print(line)
#实例化对象
happy_bday = Song(["Happy birthday",
                   "I don't want to get sued",
				   "So I'll stop right there"])

bulls_on_parade = Song(["They rally around the family",
                        "With pockets full of shells"])
#通过对象调用类中的函数
happy_bday.sing_me_a_song()

bulls_on_parade.sing_me_a_song()